Room‐Temperature and Aqueous‐Phase Synthesis of Plasmonic Molybdenum Oxide Nanoparticles for Visible‐Light‐Enhanced Hydrogen Generation

Shi, Jian Lin; Kuwahara, Yasutaka; Wen, Meicheng; Navlani‐García, Miriam; Mori, Kohsuke; An, Taicheng; Yamashita, Hiromi

doi:10.1002/asia.201600771

Cited by 37 publications

(36 citation statements)

References 43 publications

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“…[14] As for the XRD pattern of MoO 3Àx nanodots, only ab read-shape peak can be found, suggesting that the as-obtained product is amorphous. [15] The above result is in agreement with the HRTEM images. Furthermore, Ramanspectra were utilized to character-ize the phase of the sample.…”

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confidence: 88%

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Room‐temperature Synthesis of Amorphous Molybdenum Oxide Nanodots with Tunable Localized Surface Plasmon Resonances

Zhu

et al. 2017

Chemistry An Asian Journal

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Two-dimensional (2D) semiconductors have recently emerged as a remarkable class of plasmonic alternative to conventional noble metals. However, tuning of their plasmonic resonances towards different wavelengths in the visible-light region with physical or chemical methods still remains challenging. In this work, we design a simple room-temperature chemical reaction route to synthesize amorphous molybdenum oxide (MoO ) nanodots that exhibit strong localized surface plasmon resonances (LSPR) in the visible and near-infrared region. Moreover, tunable plasmon resonances can be achieved in a wide range with the changing surrounding solvent, and accordingly the photoelectrocatalytic activity can be optimized with the varying LSPR peaks. This work boosts the light-matter interaction at the nanoscale and could enable photodetectors, sensors, and photovoltaic devices in the future.

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supporting

confidence: 88%

“…05‐0508) . As for the XRD pattern of MoO 3− x nanodots, only a bread‐shape peak can be found, suggesting that the as‐obtained product is amorphous . The above result is in agreement with the HRTEM images.…”

Section: Figurementioning

confidence: 98%

Room‐temperature Synthesis of Amorphous Molybdenum Oxide Nanodots with Tunable Localized Surface Plasmon Resonances

Zhu

et al. 2017

Chemistry An Asian Journal

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“…After that, they prepared Pd/MoO 3−x hybrid and it exhibited great plasmon-enhanced hydrolysis of NH 3 BH 3 [72]. The MoO 3−x nanoparticles were fabricated, and the enhanced LSPR property generated by the introduction of oxygen vacancies [73]. Further, they explored the effect of reduction temperature to MoO 3 , and MoO 3−x -200 • C (H 2 reduction temperature) showed a higher dehydrogenation activity [74].…”

Section: Ammonia Borane Dehydrogenationmentioning

confidence: 99%

“…The Mo doping provided a small pore diameter leading to an enhanced specific surface area (BET area changed from 13.2 to 62.1 m 2 /g), which is contributed to enhance hydrolysis of NH 3 BH 3 [75]. The stability of existing MoO 3 -based catalyst is not desirable due to relatively short test time (60-70 min) [72][73][74][75].…”

Section: Ammonia Borane Dehydrogenationmentioning

confidence: 99%

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

et al. 2019

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This paper mainly focuses on the application of nanostructured MoO 3 materials in both energy and environmental catalysis fields. MoO 3 has wide tunability in bandgap, a unique semiconducting structure, and multiple valence states. Due to the natural advantage, it can be used as a high-activity metal oxide catalyst, can serve as an excellent support material, and provide opportunities to replace noble metal catalysts, thus having broad application prospects in catalysis. Herein, we comprehensively summarize the crystal structure and properties of nanostructured MoO 3 and highlight the recent significant research advancements in energy and environmental catalysis. Several current challenges and perspective research directions based on nanostructured MoO 3 are also discussed.Molecules 2020, 25, 18 2 of 26 applications in energy and environmental catalysis on account of their relatively low cost, high activity, and stability [9][10][11][12].Molybdenum oxide (MoO 3 ), a kind of transition metal oxide with a n-type semiconducting, nontoxic nature and high stability, has attracted a lot of attention. In particular, nanostructured MoO 3 has demonstrated superior properties to bulk MoO 3 , which is successfully employed in rechargeable batteries [13], capacitors [14], photocatalysis [15], electrocatalysis [16], gas sensors [17], and other applications [6]. The extended tunnels between the MoO 6 octahedra in MoO 3 are suitable for insert/de-insert mobile ions, such as H + and Li + , and multiple oxidation states can enable rich redox reactions. Moreover, the superiorities of low cost, chemical stability, high theoretical specific capacity (1117 mA·h/g), and the environmentally friendly nature make nanostructured MoO 3 exceptional electrode materials for rechargeable batteries capacitors [13,18]. MoO 3 has been investigated as the photocatalyst in terms of its anisotropic layered structure for absorbing UV, as well as visible light. Introducing a defect band by H + intercalation or oxygen vacancies can create defect state and decrease MoO 3 bandgap, which effectively increase the photocatalytic activity [15]. Each oxygen atom bonds to only one molybdenum atom of MoO 6 octahedra, and oxygen vacancy generates Mo dangling bond. MoO 3 favors the adsorption of water molecules in oxygen vacancies, which act as electron acceptors and consequently reduce the energy barrier make it highly reactive for electrocatalysis [2,19]. As a good gasochromic material, MoO 3 has efficient positive-ion accommodation and good charge transfer, and it can be used as an optical-based gas sensor. Moreover, relying on the change in the conductance of the oxide-on-gas adsorption/reaction, MoO 3 has been used for NO, NO 2 , CO, H 2 , NH 3 , and other gases [17]. The unique structure strongly affects the performances. Large efforts have been made to obtain nanostructured MoO 3 with appealing properties by engineering multiple synthetic strategies for the applications in various fields. A variety of methods have been developed, including hydrothermal met...

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“…It is well known that an amorphous structure can provide ample active sites, which can be used to further enhance catalytic activity. An example is the work by Shi et al., who demonstrated that the plasmon absorption of amorphous MoO 3− x nanoparticles can be obtained by using two Mo precursors with two different valence states . With visible‐light illumination, the plasmonic MoO 3− x nanoparticles showed tremendously enhanced H 2 evolution from NH 3 BH 3 solutions compared to the same experiment performed in the dark.…”

Section: Amorphous Materials With Lsprmentioning

confidence: 99%

Amorphous Materials for Enhanced Localized Surface Plasmon Resonances

Zhu

2018

Chemistry An Asian Journal

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The discovery of localized surface plasmon resonance (LSPR) in semiconductor nanocrystals has initiated a new field in plasmonics. Plasmonic nanocrystals in particular have seen rapid development in recent years because they are a class of materials with unique photoelectronic properties. At present, a growing number of amorphous plasmonic materials has been steadily capturing scientific interest, though only a few of these are well characterized. Here we focus on recent developments in state-of-the art experiments and explore the vast library of plasmonic properties in amorphous materials, including their application fields and optical spectral range. Taken together, the growing regime of amorphous material plasmonics offers enticing avenues for harnessing light-matter interactions from the visible to the terahertz region, with new potential for optical manipulation beyond what can be accomplished using traditional crystal materials.

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Room‐Temperature and Aqueous‐Phase Synthesis of Plasmonic Molybdenum Oxide Nanoparticles for Visible‐Light‐Enhanced Hydrogen Generation

Cited by 37 publications

References 43 publications

Room‐temperature Synthesis of Amorphous Molybdenum Oxide Nanodots with Tunable Localized Surface Plasmon Resonances

Room‐temperature Synthesis of Amorphous Molybdenum Oxide Nanodots with Tunable Localized Surface Plasmon Resonances

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

Amorphous Materials for Enhanced Localized Surface Plasmon Resonances

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